<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Aloudata AIR</title>
  <style>
    body {
      font-family: Arial, sans-serif;
      margin: 0;
      padding: 0;
      background-color: #f5f5f5;
    }
    .header {
      background-image: url('https://via.placeholder.com/1920x300'); /* Replace with actual image URL */
      background-size: cover;
      background-position: center;
      color: white;
      padding: 40px 20px;
      text-align: left;
    }
    .header h1 {
      font-size: 24px;
      margin-bottom: 10px;
    }
    .header h2 {
      font-size: 36px;
      font-weight: bold;
    }
    .user-profile {
      position: absolute;
      top: 20px;
      right: 20px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .user-profile img {
      width: 30px;
      height: 30px;
      border-radius: 50%;
    }
    .user-profile span {
      font-size: 14px;
    }
    .content {
      max-width: 1200px;
      margin: 0 auto;
      padding: 20px;
    }
    .card-container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .card {
      background-color: white;
      border-radius: 8px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      padding: 20px;
      text-align: center;
      cursor: pointer;
      transition: transform 0.3s ease;
    }
    .card:hover {
      transform: scale(1.02);
    }
    .card-icon {
      width: 40px;
      height: 40px;
      margin-bottom: 10px;
    }
    .card-title {
      font-size: 18px;
      font-weight: bold;
      margin-bottom: 10px;
    }
    .card-button {
      background-color: #e0e0e0;
      color: #333;
      border: none;
      padding: 8px 16px;
      border-radius: 4px;
      cursor: pointer;
    }
    .help-center {
      margin-top: 40px;
    }
    .help-center .card {
      grid-column: span 1;
    }
  </style>
</head>
<body>
  <div class="header">
    <div class="user-profile">
      <img src="https://via.placeholder.com/30" alt="User Profile">
      <span>Aloudata</span>
      <span>&#9660;</span>
    </div>
    <h1>欢迎使用</h1>
    <h2>Aloudata AIR</h2>
  </div>

  <div class="content">
    <h3>我的应用</h3>
    <div class="card-container">
      <div class="card">
        <img class="card-icon" src="https://via.placeholder.com/40" alt="数据目录图标">
        <h3 class="card-title">数据目录</h3>
        <button class="card-button">点击进入</button>
      </div>
      <div class="card">
        <img class="card-icon" src="https://via.placeholder.com/40" alt="工作台图标">
        <h3 class="card-title">主动元数据</h3>
        <button class="card-button">点击进入</button>
      </div>
      <div class="card">
        <img class="card-icon" src="https://via.placeholder.com/40" alt="工作台图标">
        <h3 class="card-title">数据编织</h3>
        <button class="card-button">点击进入</button>
      </div>
      <div class="card">
        <img class="card-icon" src="https://via.placeholder.com/40" alt="平台管理图标">
        <h3 class="card-title">平台管理</h3>
        <button class="card-button">点击进入</button>
      </div>
    </div>

    <h3>帮助中心</h3>
    <div class="card-container help-center">
      <div class="card">
        <img class="card-icon" src="https://via.placeholder.com/40" alt="帮助手册图标">
        <h3 class="card-title">帮助手册</h3>
      </div>
    </div>
  </div>
</body>
</html>